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Added 25 mins ago
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Senior Manager, Quality Assurance Services
ATB
Calgary, AB · Edmonton, AB
- Full-time
As ATB’s next Senior Manager, QA Services, you will have a unique opportunity to lead, manage and coach the Salesforce QA Services team to deliver world class experiences to our team…
Added 25 mins ago
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Senior Mechanical Engineer
Worley
Vancouver, BC
- Full-time
The Senior Material Handling Engineer / Project Manager will demonstrate strong technical leadership, accountability, and professional judgment. The successful candidate will independently…
Added 25 mins ago
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Customer Experience Engineer / M365
Microsoft
Toronto, ON
- Full-time
…building out a complete team, looking for customer obsessed Senior and Engineering Level II…
Added 25 mins ago
EC
IT Operations US & Canada Business Relationship Manager
Eaton Corporation
Airdrie, AB · Calgary, AB · Burlington, ON
- Full-time
Identify and eliminate redundant, non-standard, or low-value solutions that increase operational complexity, support costs, or technical debt.
Added 40 mins ago
Asset Management Consultant
WSP
Toronto, ON
As an Asset Management Advisor, reporting to a regional team lead, you will be expected to actively contribute to our Canadian Asset Management Strategy, which is key to our WSP growth in…
Added 55 mins ago
PM
Lead Software Engineer – Application Security & Architecture
Prospect Markets
Vancouver, BC
- Full-time
Prospect Markets is hiring a senior engineer to lead technology initiatives across our platform. You'll bring deep application security and software architecture expertise to a team…
Added 1 hour ago
BH
Senior Solution Architect
BC Hydro
Burnaby, BC
- $131,100 to $165,800 CAD / year
- Full-time
…integration maps) specific to business areas within the scope of the application portfolio in collaboration with product owners and vendor Application Managed Service (AMS)…
Added 1 hour ago
TU
Programmer Analyst II
The University of British Columbia
Vancouver, BC
- $8,810.92 to $13,202.5 CAD / month
- Full-time
Working closely with analysts, technical leads, managers and developers from UBC IT, from the Enterprise Resource Planning (ERP)program and sustainment teams, and from the broader IT…
Added 1 hour ago
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Operations Manager
Carlson Construction Group
North Vancouver, BC
- $140,000 to $160,000 CAD / year
- Full-time
Lead the Fleet. Drive Performance. Shape the Future.
Added 1 hour ago
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Senior Technical Architect, Application Development & Support
Canadian Standards Association
Toronto, ON
- Full-time
Acts as lead developer and technical design authority for applications in scope, setting coding standards, design patterns, branching strategy, and definition of done for internal and…
Added 1 hour ago
IS
Senior Clinical Research Associate
ICON Strategic Solutions
Canada
- Full-time
You will lead on clinical trial monitoring tasks requiring technical depth, with a focus on quality and continuous improvement.
Added 1 hour ago
IC
Frontend Developer
IT Connex
Toronto, ON
- Contract
The ideal candidate is a hands-on senior engineer with strong React and JavaScript expertise, experience building enterprise-scale applications, and the ability to lead technical…
Added 1 hour ago
Systems Administrator 3
British Columbia Lottery Corporation
BC · Hybrid - Kamloops or Vancouver, BC
The Systems Administrator 3 acts as a senior technical resource in application/service architecture, application design and delivery, translating business and technical requirements into…
Added 1 hour ago
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Associate Customer Success Manager - French
ServiceNow
Montreal, QC
- Full-time
…judgment and autonomy within your portfolio while drawing on senior CSMs (IC3) for strategic or commercial ambiguity. You will utilise the internal AI agents that augment the role today and…
Added 2 hours ago
OW
Oliver Wyman - Senior Lead AI Engineer
Oliver Wyman
Toronto, ON
- Full-time
…deliver unique and unprecedented products across industries. As a Senior Lead AI Engineer, you are primarily responsible for managing technical projects and helping teams design and build…
Added 2 hours ago
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Director, Strategic Communications
BC Energy Regulator
Fort St. John, BC
- Full-time
Lead the BCER’s enterprise issues and reputation management, establishing strategies and coordinated organizational responses to emerging public, media, political, and stakeholder issues…
Added 2 hours ago
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Insights & Analytics Manager
Takeda
Toronto, ON · CAN - Toronto Head Office
- Full-time
Lead the forecasting process locally: build assumptions and scenarios, gain cross-functional alignment, and clearly communicate forecast outputs, sensitivities, and risks.
Added 2 hours ago
TU
Programmer Analyst II
The University of British Columbia
Vancouver, BC
- $8,810.92 to $13,202.5 CAD / month
- Full-time
Working closely with analysts, technical leads, managers and developers from UBC IT, from the Enterprise Resource Planning (ERP)program and sustainment teams, and from the broader IT…
Added 2 hours ago
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Senior Director, Product & Platform Trust
Autodesk
Toronto, ON · Greater Toronto Area, Canada
- Full-time
You will lead an organization spanning application security, trust engineering, and product management including product-team enablement. Together, these teams will develop the tools,…
Added 2 hours ago
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IT Specialist II
WCB-Alberta
AB · Edmonton - Jarvis
- Full-time
Come join our Application & Cloud Services (ACS) team where you will focus on project and service delivery within the Business Technology Services (BTS) department. Reporting to the Team…
Added 2 hours ago
PE
Sr. Project Manager - Industrial Hygiene
Partner Engineering & Science, Inc.
Sherbrooke, QC
- Full-time
Partner Engineering and Science, Inc. is seeking a full-time Senior Project Manager within the Environmental Health & Safety Practice. This leadership position is responsible for managing…
Added 2 hours ago
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Intermediate Electrical Designer/Engineer
Danaher
Concord, ON
- $90,000 to $103,000 CAD / year
- Full-time
…and design practices. In this role you will work closely with senior designers to develop your hardware development skills as part of an industry leading research and development…
Added 2 hours ago
PC
Cloud Infrastructure Engineer, Senior Associate
Pwc Canada
Ottawa, ON · Toronto, ON
- Full-time
…situations, you are growing your personal brand, deepening technical expertise and awareness of your strengths. You are expected to anticipate the needs of your teams and clients, and to…
Added 3 hours ago
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Senior Specialist Labour Relations Arbitration-CA
CN
Montreal, QC · Greater Montreal Metropolitan Area
- Full-time
Support FLS on employee issues, including collective agreement interpretation, discipline, attendance management, application of the Canada Labour Code and other employer obligations, such…
Added 3 hours ago
UO
Senior Systems Development Analyst, VP Development and Alumni
University of Calgary
Calgary, AB
- Full-time
Reporting to the Manager, Data Systems, the Senior Systems Development Analyst is responsible for supporting the development, maintenance and error-free operation of VP Development and…

IT Connex

Frontend Developer

Toronto, ON, Canada

Contract

Apply About employer

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Job details

Job type: Contract
Apply by: Nov 26, 2026
Posting language: English
Posted: Oct 27, 2026

Original job description

Senior Software Engineer – React / JavaScript

Location: Toronto, ON

Work Arrangement: Hybrid – 3 days per week onsite

Experience: 10+ years

Job Overview

We are seeking an experienced Senior Software Engineer with strong expertise in React, JavaScript, and modern web application development to join a team responsible for building and enhancing a large-scale Fixed Income trade processing platform.

The platform supports global trading operations across derivatives, cash products, exotics, and securities financing transactions. It processes approximately 200,000 transactions daily and provides real-time position and risk management capabilities.

In this role, you will contribute to the evolution of a next-generation trading application, focusing on modern UI/UX engineering, service-oriented architecture, automated CI/CD pipelines, and improvements to system performance, scalability, and reliability.

Key Responsibilities

Design, develop, and maintain robust, scalable, and testable web applications using React, JavaScript, HTML5, and Node.js.
Collaborate with cross-functional teams to integrate application functionality and deliver new products and process improvements.
Lead technical design and implementation, ensuring solutions align with enterprise architecture standards.
Analyze complex business and system processes to identify issues and develop innovative technical solutions.
Improve application performance, scalability, reliability, and testability through effective engineering practices.
Contribute to the transition toward smaller, modular services and fully automated CI/CD pipelines.
Establish and promote standards for coding, testing, debugging, and deployment.
Identify and implement system enhancements that improve operational efficiency and time to market.
Assess and manage technical and operational risks while ensuring compliance with applicable policies and controls.
Provide technical guidance and mentorship to mid-level developers and analysts, including coordinating development activities when required.

Required Skills and Qualifications

8+ years of experience in software application development.
Strong hands-on experience with React, JavaScript, and HTML5.
Experience with Node.js and modern web development concepts.
Strong understanding of application architecture, system integration, and software design principles.
Experience developing high-quality, testable code and troubleshooting complex application issues.
Knowledge of performance optimization, scalability, reliability, and non-functional requirements.
Experience working in large, collaborative development environments.
Familiarity with automated testing, CI/CD pipelines, and modern software delivery practices.
Demonstrated technical leadership, problem-solving, and mentoring skills.
Ability to manage competing priorities and adapt to changing business requirements.

Nice to Have

Experience with Fixed Income products, trading platforms, or capital markets applications.
Knowledge of C# and the .NET Framework.
Experience with derivatives, cash products, or securities financing transactions.
Exposure to service-oriented or microservices architectures.

Education

Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
Master’s degree is preferred.

Ideal Candidate

The ideal candidate is a hands-on senior engineer with strong React and JavaScript expertise, experience building enterprise-scale applications, and the ability to lead technical implementation. Experience in financial services or Fixed Income trading platforms is an advantage.

Please note: This role requires working onsite in Toronto three days per week.

Apply About employer

More about this job

Responsibilities

Design, develop, and maintain scalable React and JavaScript applications for a large-scale fixed-income trade processing platform, while improving performance, reliability, and testability. Lead technical implementation, promote engineering and delivery standards, support modular services and automated CI/CD, and mentor developers and analysts.

Requirements

Requires 8+ years of software application development experience, strong hands-on React, JavaScript, and HTML5 skills, and experience with Node.js, architecture, integration, testing, and complex troubleshooting. Candidates should demonstrate technical leadership, mentoring, and collaboration skills; a bachelor's degree or equivalent experience is required, and a master's degree is preferred.

Skills

React
JavaScript
HTML5
Node.js
Application Architecture
System Integration
Software Design
Performance Optimization
Scalability
Automated Testing
CI/CD
Technical Leadership
Mentoring
Service-Oriented Architecture
Microservices
Fixed Income Trading

Visa sponsorship

Not detected in the job text

Keywords

React
JavaScript
HTML5
Node.js
C#
.NET Framework
Fixed Income
Trade Processing
Trading Platforms
Capital Markets
Derivatives
Cash Products
Securities Financing
Application Architecture
System Integration
Software Design
Service-Oriented Architecture
Microservices
CI/CD Pipelines
Automated Testing
Performance Optimization
Scalability
Reliability
Non-Functional Requirements
Technical Leadership
Mentoring
Enterprise Applications
Risk Management
Toronto

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